157171772 has 12 divisors (see below), whose sum is σ = 276739176. Its totient is φ = 78103440.

The previous prime is 157171759. The next prime is 157171841. The reversal of 157171772 is 277171751.

157171772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119879 + ... + 121182.

It is an arithmetic number, because the mean of its divisors is an integer number (23061598).

Almost surely, 2^157171772 is an apocalyptic number.

It is an amenable number.

157171772 is a deficient number, since it is larger than the sum of its proper divisors (119567404).

157171772 is a wasteful number, since it uses less digits than its factorization.

157171772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 241228 (or 241226 counting only the distinct ones).

The product of its digits is 24010, while the sum is 38.

The square root of 157171772 is about 12536.8166613379. The cubic root of 157171772 is about 539.6657419264.

The spelling of 157171772 in words is "one hundred fifty-seven million, one hundred seventy-one thousand, seven hundred seventy-two".